Most Helpful Guy
Depends upon what the dress code policies are. I think it's fine that you are wearing a bra even though they can see it if they pay real close attention to it. But if you weren't wearing a bra at all then that could be a problem, then you might need to another shirt below the current one.
by the way, your face reminds me of Eliza Dushku for some reason.
Most Helpful Girl
If you feel comfortable in it and don't care if other people judge, wear it. It's not exposing a lot and I personally wouldn't think it's improper. It's looks like it's not MEANT to show your bra so you won't look like you were trying to dress "improperly," you just might look a little clueless. If you like it and you don't mind, wear it.